device function pointers

Accelerated Computing CUDA CUDA Programming and Performance
1

Dear Sirs,
I need a device version of the following
host code:

double (**func)(double x);

double func1(double x)
{
 return x+1.;
}

double func2(double x)
{
 return x+2.;
}

double func3(double x)
{
 return x+3.;
}

void test(void)
{
 double x;

 for(int i=0;i<3;++i){
  x=func[i](2.0);
  printf("%g\n",x);
 }

}

int main(void)
{
 func=(double (**)(double))malloc(10*sizeof(double (*)(double)));

 test();

 return 0;
}

where func1, func2, func3
have to be device functions
and “test”
has to be a (suitably modified) global kernel.

I have a NVIDIA GeForce GTS 450 (compute capability 2.1)
Thank you in advance
Michele